Move ".crx"/".pem" constants and extension_filenames constants into extensions/common/constants.cc.

chrome/browser/extensions/extension_protocols.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extension_protocols.h"
 
 #include <algorithm>
 
 #include "base/base64.h"
 #include "base/compiler_specific.h"
@@ skipping 464 matching lines @@
     if ((extension->manifest_version() >= 2 ||
          extensions::WebAccessibleResourcesInfo::HasWebAccessibleResources(
              extension)) &&
         extensions::WebAccessibleResourcesInfo::IsResourceWebAccessible(
             extension, resource_path))
       send_cors_header = true;
   }
 
   std::string path = request->url().path();
   if (path.size() > 1 &&
-      path.substr(1) == extension_filenames::kGeneratedBackgroundPageFilename) {
+      path.substr(1) == extensions::kGeneratedBackgroundPageFilename) {
     return new GeneratedBackgroundPageJob(
         request, network_delegate, extension, content_security_policy);
   }
 
   base::FilePath resources_path;
   base::FilePath relative_path;
   // Try to load extension resources from chrome resource file if
   // directory_path is a descendant of resources_path. resources_path
   // corresponds to src/chrome/browser/resources in source tree.
   if (PathService::Get(chrome::DIR_RESOURCES, &resources_path) &&
@@ skipping 66 matching lines @@
                                     send_cors_header);
 }
 
 }  // namespace
 
 net::URLRequestJobFactory::ProtocolHandler* CreateExtensionProtocolHandler(
     bool is_incognito,
     ExtensionInfoMap* extension_info_map) {
   return new ExtensionProtocolHandler(is_incognito, extension_info_map);
 }